High noise with emission materials
One option is to use the Denoiser.  It is located on the properties bar under Scene.  The downside is that by using it you lose detail in the scene.  There is a video on Youtube called "Drastically Reduce Rendertime in Blender Cycles New Denoising Feature".

As implied by the title, it also reduces your render times.  What I mean by this is that it keeps you from having to do a higher amount of samples, which would increase your render times.  The denoiser actually causes each frame to take longer in rendering, but it's way better than trying to increase the sample amount till you get the same result.